This week on Crave, quench your thirst with the Hydra SmartBottle and take a sneak peek at a new hoverboard prototype from Lexus. But make sure you're wearing protection with condoms engineered to change color if they come into contact with a sexually transmitted infection. It's the Crave show!

Road Trip 2015: The second half of a two-part series about Vietnam's startup scene takes a deeper look at some rare success stories and how the country is fostering -- and hindering -- its homegrown tech community.